package com.ganzalang.gmall.learning.netty.netty.simple;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
import lombok.extern.slf4j.Slf4j;

/**
 * @description:
 * @author: Ganzalang
 * @Date 2021/7/19 21:37
 */
@Slf4j
public class NettyClientHandler extends ChannelInboundHandlerAdapter {

    /**
     * 当通道就绪就会出发该方法
     *
     * @param ctx 上下文
     * @throws Exception
     */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        log.info("client's context: {}", ctx);
        ctx.writeAndFlush(Unpooled.copiedBuffer("hello, (>^Ω^<)喵", CharsetUtil.UTF_8));
    }

    /**
     * 当通道有读取事件时会触发
     *
     * @param ctx
     * @param msg
     * @throws Exception
     */
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf byteBuf = (ByteBuf) msg;
        log.info("服务器回复的消息：{}", byteBuf.toString(CharsetUtil.UTF_8));
        log.info("服务器的地址：{}", ctx.channel().remoteAddress());
    }
}
